55553444 has 24 divisors (see below), whose sum is σ = 101719800. Its totient is φ = 26512640.

The previous prime is 55553429. The next prime is 55553447. The reversal of 55553444 is 44435555.

It can be written as a sum of positive squares in 4 ways, for example, as 1236544 + 54316900 = 1112^2 + 7370^2 .

It is a super-2 number, since 2×55553444² = 6172370280522272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55553447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7634 + ... + 13014.

It is an arithmetic number, because the mean of its divisors is an integer number (4238325).

Almost surely, 2^55553444 is an apocalyptic number.

It is an amenable number.

55553444 is a deficient number, since it is larger than the sum of its proper divisors (46166356).

55553444 is a wasteful number, since it uses less digits than its factorization.

55553444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5503 (or 5501 counting only the distinct ones).

The product of its digits is 120000, while the sum is 35.

The square root of 55553444 is about 7453.4182762005. The cubic root of 55553444 is about 381.5665798678.

Adding to 55553444 its reverse (44435555), we get a palindrome (99988999).

The spelling of 55553444 in words is "fifty-five million, five hundred fifty-three thousand, four hundred forty-four".